CN105081683A - Machining technology of straight-seam steel reel pipe - Google Patents
Machining technology of straight-seam steel reel pipe Download PDFInfo
- Publication number
- CN105081683A CN105081683A CN201410219813.XA CN201410219813A CN105081683A CN 105081683 A CN105081683 A CN 105081683A CN 201410219813 A CN201410219813 A CN 201410219813A CN 105081683 A CN105081683 A CN 105081683A
- Authority
- CN
- China
- Prior art keywords
- welding
- pipe
- steel plate
- thickness
- weld
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L9/00—Rigid pipes
- F16L9/17—Rigid pipes obtained by bending a sheet longitudinally and connecting the edges
Abstract
A machining technology of a straight-seam steel reel pipe comprises discharging, rounding and opening closing, welding of an inner longitudinal welding seam, welding of an outer longitudinal welding seam, pipe connecting (pipe opening polishing), welding of an inner ring welding seam, welding of an outer ring welding seam, welding seam appearance checking, and welding seam nondestructive inspection and repairing. According to the machining technology, the straightness, the welding opening roundness and the welding quality of the steel pipe can be improved.
Description
Technical field:
The invention belongs to a kind of manufacture craft of pipeline, particularly a kind of vertical masonry joint steel pipe crimping processing technology.
Background technology:
Vertical masonry joint steel pipe is mainly used in emphasis and the difficult point position of urban water supply and sewerage pipeline construction, the fields such as the construction of the circulating water pipeline of (construction as push pipe sections such as highway crossing, river, railways), power plant, industry and the construction of structural steel tubulation.But the processing technology of this vertical masonry joint steel pipe crimping of processing makes the aspects such as the glacing flatness of pipe, circularity and weld bond quality control have problems at present, needs corrective measure to control further.
Summary of the invention:
Object of the present invention is just to provide a kind of vertical masonry joint steel pipe crimping processing technology, and this process can improve steel Guan Zhidu, weld bond circularity and welding quality.
As above conceive, technical scheme of the present invention is: a kind of vertical masonry joint steel pipe crimping processing technology, is characterized in that: comprise the steps:
(1) blanking: comprise steel plate line, planing, cut plate and fishplate bar; The limit deviation of its light plate line should meet: width and length ± 1, diagonal relative mistake are 2, corresponding sides relative mistake is 1, lose high (curved portion) ± 0.5;
(2) round as a ball and heal up: to comprise flanging, roll forming, heal up tack welding and vertical postwelding Hui Yuan; Wherein, flanging is placed between up-down rollers by press mold, is placed in by steel plate on mould and carries out flanging, requires that plate and end face are parallel to the pressure roller amount of putting in and are as the criterion with remaining straight flange≤150 ~ 200mm, check, model gap≤2mm after flanging with interior round template; By carrying out tack welding after roll forming, it requires spot welding sum≤6 points, often some length≤30mm, and apart from end face≤80mm; Vertical postwelding Hui Yuan is the cylindrical shell required for the circularity that is above standard, must after longitudinal seam again Hui Yuanzhi meet the requirements, roundness deviation should meet following requirement:
A, Φ <800mm is less than 1% of external diameter and is not more than 4mm;
B, Φ 800-Φ 1200mm roundness deviation≤4mm;
C, Φ 1300-Φ 1600mm roundness deviation≤6mm;
D, Φ 1700-Φ 2400mm roundness deviation≤8mm;
E, Φ 2600-Φ 3000mm roundness deviation≤9mm;
F, caliber >=Φ 3000mm roundness deviation 10mm;
(3) inside and outside longitudinal seam welding: be face bonding one deck in the welding number of plies of the steel plate of 8-34mm for thickness, reverse side welds one deck, welding current between 450-980A, weldingvoltage between 30-42V, speed of welding is between 20-50cm/min; Be that face bonding is two-layer for thickness in the welding number of plies of the steel plate being greater than 36mm, reverse side weldering is two-layer, welding current between 800-950A, weldingvoltage between 38-42V, speed of welding is between 20-28cm/min;
(4) mouth of pipe polishing, organize right:
(5) inner and outer ring seam welding: group is firmly placed on turntable good steel pipe, its one end presses closer backstay, connects ground wire and adjusts the position of welding agent pallet, adjusting welding machine and carry out welding: wherein: interior boxing adopts delayed welding procedure; Both welding wire centre-to-centre spacing pipe diameter minimum point was 30-50mm, and Weld pipe mill is aimed at welding wire center, its deviation≤1mm, and welding wire end is apart from tube wall 50-80mm; Outer welding adopts advanced welding procedure, and both welding wire centre-to-centre spacing pipe diameter minimum point was 30-50mm, and Weld pipe mill is aimed at welding wire center, its deviation≤1mm, and welding wire end is apart from tube wall 50-80mm;
During welding, be face bonding one deck for thickness in the welding number of plies of the steel plate of 8-34mm, reverse side welds one deck, welding current between 450-980A, weldingvoltage between 30-45V, speed of welding is between 20-50cm/min; Welding number of plies thickness being greater than to the steel plate of 36mm is that face bonding is two-layer, and reverse side weldering is two-layer, welding current between 800-950A, weldingvoltage between 38-42V, speed of welding is between 20-28cm/min;
(6) weld appearance, Non-Destructive Testing and repairing.
In above-mentioned steps (2), the arc length of the school round template of pipe crimping should be 1/6 ~ 1/4 of pipe girth; The gap of not fitting of model and inside pipe wall should meet the following requirements:
10% of a, docking longitudinal seam place≤wall thickness adds 2mm, and≤3mm;
B, docking longitudinal joint place≤2mm from pipe end 200mm;
C, other position≤1mm;
Cylindrical shell interface should meet the following requirements:
A, interface gaps≤4mm;
10% of b, edges of boards height infraversion malposition≤thickness of slab, and≤2mm;
C, end plates dislocation≤1mm.
In above-mentioned steps (3), welding wire adopts H08A, solder flux HJ431; Groove type: 16 and 16mm adopt " I " type groove with lower steel plate, 18 ~ 24 steel plates adopt " Y " type grooves, and 26 ~ 42 steel plates adopt " X " type grooves; Steel plate thickness≤12 Ф 4mm welding wire, steel plate thickness >=14mm Ф 5mm welding wire.
The present invention has following advantage and good effect:
1, the limit deviation that the present invention requires steel plate to rule in blanking process should meet: width and length ± 1, diagonal relative mistake are 2, corresponding sides relative mistake is 1, lose high (curved portion) ± 0.5, therefore effectively can ensure the glacing flatness of tubulation.
2, of the present invention round as a ball and the process of healing up comprises flanging, roll forming, heal up tack welding and vertical postwelding Hui Yuan.Wherein, vertical postwelding Hui Yuan is the cylindrical shell required for the circularity that is above standard, must after longitudinal seam again Hui Yuanzhi meet the requirements, roundness deviation should meet following requirement:
A, Φ <800mm is less than 1% of external diameter and is not more than 4mm;
B, Φ 800-Φ 1200mm roundness deviation≤4mm;
C, Φ 1300-Φ 1600mm roundness deviation≤6mm;
D, Φ 1700-Φ 2400mm roundness deviation≤8mm;
E, Φ 2600-Φ 3000mm roundness deviation≤9mm;
F, caliber >=Φ 3000mm roundness deviation 10mm;
Therefore, the circularity of pipe crimping can effectively be ensured.
3, welding process of the present invention comprises the welding of inside and outside longitudinal seam, the welding of inner and outer ring weld seam, weld appearance inspection and weld seam nondestructive inspection and repairing, therefore, effectively can ensure the quality of weld bond.
Detailed description of the invention:
A kind of vertical masonry joint steel pipe crimping processing technology, comprises the steps:
One, blanking:
1, rule: the limit deviation of steel plate line should meet the regulation of table 1:
Table 1
2, sliced venceer:
(1) preparation before plate: check whether sheet metal thickness used conforms to design thickness, be that 6500mm is split according to design length and planer maximum planing length, Founder (the title side of the looking for) cut size should measuring plate should be cuts plate cutting and stays 20-40mm.
(2) plane: the hoisting steel plate of planing is steadily placed on planer bed surface, steel plate longitudinal edge one side and the depth of parallelism of planer is adjusted with T-square, with four block pressur plates steel plate compressed on bed surface again and plane, steel plate two longitudinal edge end face after planing all should be shown in metallic luster, special circumstances local allows to leave a small amount of raw sheet limit, but continuous length must not more than 500mm, groove face necessary twice shaping (straight mouth-groove), must not be there is machined trace obviously in planing face, width 3 meets the requirements and can lift by crane after measuring.
3, plate is cut: be placed on by the hoisting steel plate through planing in blankers' station and carry out cutting plate.T-square cuts near the setting-out of steel plate end straight flange one side, and its otch, as the long basic point of plate, is undertaken ruling by the both sides method of measuring and meanwhile measures two diagonal errors and be no more than regulation, carry out cutting and determine that plate is long.Points for attention during cutting: often should observe kerf width, be generally 3-5mm, otch and plate face perpendicularity etc. are selected or adjust cutting torch model and relevant parameters.
4, fishplate bar: according to design length, the fishplate bar of needs adopts Lincoln weld to weld without exception.
Two, round as a ball and heal up: program: the flanging-rolling forming-tack welding that heals up-vertical postwelding Hui Yuan (determining to carry out according to cylinder roundness)
1, flanging:
(1) preparation before flanging: according to the requirement of shaping groove, determine turnover panel towards the turnover panel with whether: the foreign material on cleaning plate surface, comprise the burr after gas cutting: polishing to having the end face of welding requirements and side 20mm wide region with angle grinding machine, seeing metallic luster.
(2) flanging: select suitable press mold to be placed between up-down rollers, is placed in steel plate on mould and carries out flanging.Require that plate and end face are parallel to the pressure roller amount of putting in and are no more than 150 ~ 200mm with remaining straight flange and are as the criterion.Check with interior round template after flanging, model gap is not more than 2mm.
2, roll forming:
(1) plate pressing through limit is just lifted between veneer reeling machine up-down rollers again, requires that plate one side is near lower roll side.Adjustment up-down rollers is carried out round as a ball, and each lower roll amount is unsuitable excessive.
(2), before roll bending or in coiling process, oxide skin surface of steel plate should peeled off is clean with other eliminating impurities.
(3) roll bending direction should be consistent with the rolling direction of steel plate.
3, tack welding: by carrying out tack welding after roll forming, it requires: spot welding sum is no more than 6 points, and often length is no more than 30mm, and is not less than 80mm apart from end face.Spot welding is according to the plate just welding rod of thickness and material selection different model and welding parameter.
4, Hui Yuan: for be above standard circularity require cylindrical shell, must after longitudinal seam again Hui Yuanzhi meet the requirements.
5, key control point:
(1) must not there is significantly depression or protuberance in the cylindrical shell interface after round as a ball, the arc length of the school round template of pipe crimping should be 1/6 ~ 1/4 of pipe girth; The gap of not fitting of model and inside pipe wall should meet the following requirements:
A. docking longitudinal seam place must not be greater than 10% of wall thickness and add 2mm, and must not be greater than 3mm.
B. the docking longitudinal joint place from pipe end 200mm must not be greater than 2mm.
C. other positions must not be greater than 1mm.
(2) cylindrical shell interface:
A. interface gaps is not more than 4mm.
B. edges of boards height infraversion malposition is not more than 10% of thickness of slab, and is not more than 2mm.
C. end plates dislocation is not more than 1mm.
(3) pipe crimping end face must not be greater than 1% of tube outer diameter with the vertical tolerance of center line, and must not be greater than 3mm.
(4) in pipe crimping manufacturing process, sheet material surface damage should be prevented.To there being the position of serious scar to carry out repair welding reconditioning, the wall thickness of reconditioning place must not be less than design wall thickness.
(5) roundness deviation meets following requirement:
A. Φ <800mm is less than 1% of external diameter and is not more than 4mm.
B. Φ 800-Φ 1200mm roundness deviation≤4mm.
C. Φ 1300-Φ 1600mm roundness deviation≤6mm.
D. Φ 1700-Φ 2400mm roundness deviation≤8mm.
E. Φ 2600-Φ 3000mm roundness deviation≤9mm.
F. caliber >=Φ 3000mm roundness deviation 10mm.
Note: circularity refers to the difference of the vertical caliber of same end face.
Three, inside and outside longitudinal seam welding:
1, the preparation before operation:
(1) operative employee must possess the operation certificate of operation submerged-arc welding, and should carry out necessary cleaning before the welding of steel pipe pipe nipple, especially the foreign material such as steel plate oxide skin must not be left in commissure, and strictly should carry out the cleaning of welding wire, weldment, welding surface, solder flux will be dried.
(2) steel pipe pipe nipple should firmly be placed on welding stage, and make steel pipe longitudinal seam all and closely and flux contacts must not leave space.
(3) steel pipe pipe nipple weld seam two ends firmly should be welded with the run-on tab of the stack piles such as steel pipe, receive each one piece of arc plate, and it is of a size of 120 × 100mm and draws, receives arc plate and allow to reuse, and is generally no more than 4 times.
(4) adjusting track makes it be parallel to steel pipe seam, its deviation≤1mm.
2, the selection of welding wire, solder flux and welding parameter: various process parameters (see the table 2) special circumstances of answering strict implement to specify during welding as: weld seam strengthen, height variations in skews etc., technological parameter can make the appropriate adjustments.
Table 2 welding by both sides double-faced forming parameter list
3, solder flux pipe inside weld place must left over after interior vertical weldering welding, the cleaning of weldering skin totally, find that the defects such as exterior vent should be repaired in time.
4, need before outer vertical weldering welding to adjust track, and clear up with the butt welded seam such as wire brush, emery wheel place legacy, especially must not leave weldering pomegranate, otherwise must not welding.
5, other in outer vertical weldering welding requires to perform by interior vertical weldering.
6, the quality requirement after welding:
(1) welding bead surface should be smooth, must not have crackle, weldering pomegranate, pore, undercut degree of depth < 0.5mm, continuous undercut length≤100mm.
(2) welding bead center and Weld pipe mill side-play amount≤1mm.
(3) reinforcement 0 ~ 3mm is welded
(4) weld width (see table 3)
| Thickness of slab (mm) | Weld width b (mm) |
| 10 | ≥14 |
| 12 | ≥16 |
| 14 | ≥18 |
| 16 | ≥20 |
| 18 | ≥22 |
| 20 | ≥24 |
| 22 | ≥26 |
| 24 | ≥28 |
| 26 | ≥30 |
| 28 | ≥32 |
| 30 | ≥34 |
| 32 | ≥34 |
| 34 | ≥34 |
| 36 | ≥34 |
| 38 | ≥34 |
| 40 | ≥34 |
| 42 | ≥34 |
Table 3
Four, counterpart (mouth of pipe polishing):
1, first steel pipe should slice off pipe nipple longitudinal seam place's striking used, arc extinguishing board with gas cutting to pipe (group to) is front, requires that cut place should be straight, and polishes with electric wheel.
2, indulge weld bond place to pipe nipple used, straight flange end face and inside and outside side 20mm place carry out strict reconditioning, and it requires: all should expose metallic luster, must not leave corrosion.
3, after reconditioning, pipe nipple is put in and is grouping on pipe platform, and it is right that the pipe nipple for ovality especially vertical mouth place ovality severe overweight must not be organized by force, must carry out back circle can organize right.
4, spot welding requires: welding rod used should match with steel plate material used, and spot welding should be firm, the depth of weld (undercut) > 5mm, spot welding spacing ﹥ 100mm; Single solder joint length is 20 ~ 30mm, and T-shaped mouth place solder joint should away from more than longitudinal seam 200mm.
5, boxing counterpart edges of boards height infraversion malposition is not more than 10% of thickness of slab, and is not more than 2mm.
6, during pipe crimping group pair, adjacent cylindrical section two longitudinal joint spacing should be greater than 100mm.The outer span weld seam of arm should not be less than 50mm.
7, have the pipe crimping of reinforcing ring, plate, the butt weld of reinforcing ring, plate should be staggered with pipe longitudinal seam, and its spacing should not be less than l00mm.Reinforcing ring, plate should not be less than 50mm apart from the girth joint of pipe crimping.
8, the glacing flatness deviation of every meter of straight tube must not be greater than 1mm.
9, spot welding place must not leave welding agent skin.
Five, inner and outer ring seam welding:
1, the preparation before welding:
(1) operative employee must possess the operation certificate of operation submerged-arc welding, and remove the oxide skin of all foreign material and activity in pipe, especially will remove the weldering skin the etc. during spot welding of girth joint place, strictly should carry out the cleaning of welding wire, weldment, welding surface, solder flux will be dried.
(2) group be firmly placed on turntable good steel pipe, its one end presses closer backstay, connects ground wire and adjusts the position of welding agent pallet.
(3) adjust welding machine and carry out welding:
Interior boxing: adopt delayed welding procedure without exception; Both welding wire centre-to-centre spacing pipe diameter minimum point was 30-50mm, and Weld pipe mill is aimed at welding wire center, its deviation≤1mm, and welding wire end is apart from tube wall 50-80mm (stretching out height also known as welding wire).
Outer boxing: adopt advanced welding procedure without exception, other parameter is with interior boxing.
2, welding:
(1) technological parameter formulated in strict implement quality planning is answered in welding, and only strengthen at the increasing of weld seam gap, high infraversion malposition, technological parameter just can appropriately adjust.
Technological parameter is in table 4:
Table 4 welding by both sides double-faced forming parameter list
(2) inside and outside boxing arcing point is without exception apart from steel pipe T-shaped mouth place more than 200mm, and quenching moment should cover starting the arc place 50-80mm.
(3) with the cleaning such as emery wheel or wire brush welding bead, welding agent, oxide skin and overlap etc. must not must be left before outer boxing welding.
3, the eliminating impurities such as inside and outside all weldering skins, welding agent will be managed after welding clean.
4, welding bead surface should smooth, crackle, overlap pore must not be had; Undercut degree of depth <0.5mm, continuous length <100mm.
5, welding bead center and Weld pipe mill side-play amount≤1mm.
6, welding and assembling height h=0-3mm
7, weld width b (see table 5)
| Thickness of slab (mm) | Weld width b (mm) |
| 10 | ≥14 |
| 12 | ≥16 |
| 14 | ≥18 |
| 16 | ≥20 |
| 18 | ≥22 |
| 20 | ≥24 |
| 22 | ≥26 |
Table 5 different thickness of slab weld width reference table
Six, weld appearance, Non-Destructive Testing and repairing:
1, check and postwelding inspection in inspection before weldquality inspection should comprise the weldering of welding point, welding process.
(1) before weldering the scope of examination comprise groove type and size, groove face quality, weldment group to quality etc.
(2) the welding process scope of examination comprises the detection of welding surroundings, preheat temperature, welder perform welding procedure situation etc.
(3) the postwelding scope of examination comprises weld appearance quality examination, weld seam Non-Destructive Testing and the inspection of Product jointing test plate (panel) etc.
2, answer all weld seams of butt-welding fitting to carry out presentation quality inspection, its quality examination requires to see the following form 6.Weld appearance quality examination should adopt the magnifying glass of weld gauge and 5 times to carry out, and ensures good illumination.
Table 6 Weld Profiles and appearance requirement
3, have a class of fatigue strength requirement, two class weld seams should seamlessly transit, avoid producing undercut, butt weld reinforcement and angle welding toe of weld should reconditionings, and seamlessly transit.
4, visual examination of weld up-to-standard after should carry out weld seam Non-Destructive Testing.Lossless detection method, detection range and quality requirement should meet the regulation of design document, product relevant criterion: if no standard, answer according to the form below 7 requirement.
Table 7 nondestructive inspection length accounts for total length percentage
5, nondestructive testing personnel should hold that the national departments concerned such as quality supervision department and Non-Destructive Testing association signs and issues, and the technical qualification certificate adapted with its work.Evaluation weldquality should be served as by the nondestructive testing personnel of more than II grade or II grade.
6, the flaw detection of weld seam inside can select ultrasonic examination or radiographic inspection method.When wherein a kind of method of detection inspection has a question, another kind of method of detection should be adopted to check.
7, the inspection of radiographic inspection and evaluation perform by GB/T3323 regulation, and inspection level is B level, and a class weld seam is not less than II grade for qualified, and it is qualified that two class weld seams are not less than III grade; The inspection of ultrasonic examination and evaluation perform by GB11345 regulation, and inspection level is B level, and a class weld seam I grade is qualified, and two class weld seams are not less than II grade for qualified.
If 8, weld seam local nondestructive inspection finds that there is and do not allow shortcoming, or should do in Suspected Area to supplement defect detecting test at the bearing of trend of shortcoming; If still find that there is through supplementary flaw detection and do not allow shortcoming, then welding position or the whole piece weld seam of tackling this welder institute's welding on this weld seam are detected a flaw.
9, shortcoming process and soldering
(1) when Weld Profiles and presentation quality do not meet the regulation of Weld Profiles and appearance requirement table, allow welder to do over again voluntarily, carry out reconditioning or welding procedure carries out local repair welding, and the weld seam of repair welding is answered between former weld seam and be kept seamlessly transitting.But face crack must not be taken the liberty to decide matters by oneself, solder technology personnel should be declared in time.
(2) weld seam exist weld crack, incomplete fusion and other do not meet quality requirement inside shortcoming time, before doing over again, should analyze welding shortcoming Producing reason, have solder technology personnel formulate welding shortcoming technique of doing over again.
(3) what welding was lacked does over again and should be undertaken by following requirements:
A. welding shortcoming can adopt carbon arc air gouging, emery wheel or other mechanical means to remove, and does not allow to adopt electric arc or gas cutting flame to melt and removes.
When b. adopting carbon arc air gouging to remove welding shortcoming, should polish cleaning gouge surface and reconditioning channeling, removing carburized layer.
C. weld shortcoming should thoroughly remove, do not allow jagged and indenture, bottom groove, answer rounding off.
D. have the weld seam of preheating requirement, preheat temperature when its local weld seam is done over again should be higher than former weld seam preheat temperature 20 ~ 30 DEG C.
E. the weld seam at same position does over again number of times no more than twice, should can carry out, and rework aspect is charged to product quality archives more than twice through person in charge of the technology aspect's approval.
(4) weld seam after doing over again, should by the quality requirement of former weld seam and lossless detection method, to do over again place and near carry out 100% inspection.
Claims (3)
1. a vertical masonry joint steel pipe crimping processing technology, is characterized in that: comprise the steps:
(1) blanking: comprise steel plate line, planing, cut plate and fishplate bar; The limit deviation of its light plate line should meet: width and length ± 1, diagonal relative mistake are 2, corresponding sides relative mistake is 1, lose high (curved portion) ± 0.5;
(2) round as a ball and heal up: to comprise flanging, roll forming, heal up tack welding and vertical postwelding Hui Yuan; Wherein, flanging is placed between up-down rollers by press mold, is placed in by steel plate on mould and carries out flanging, requires that plate and end face are parallel to the pressure roller amount of putting in and are as the criterion with remaining straight flange≤150 ~ 200mm, check, model gap≤2mm after flanging with interior round template; By carrying out tack welding after roll forming, it requires spot welding sum≤6 points, often some length≤30mm, and apart from end face≤80mm; Vertical postwelding Hui Yuan is the cylindrical shell required for the circularity that is above standard, must after longitudinal seam again Hui Yuanzhi meet the requirements, roundness deviation should meet following requirement:
A, Φ <800mm is less than 1% of external diameter and is not more than 4mm;
B, Φ 800-Φ 1200mm roundness deviation≤4mm;
C, Φ 1300-Φ 1600mm roundness deviation≤6mm;
D, Φ 1700-Φ 2400mm roundness deviation≤8mm;
E, Φ 2600-Φ 3000mm roundness deviation≤9mm;
F, caliber >=Φ 3000mm roundness deviation 10mm;
(3) inside and outside longitudinal seam welding: be face bonding one deck in the welding number of plies of the steel plate of 8-34mm for thickness, reverse side welds one deck, welding current between 450-980A, weldingvoltage between 30-42V, speed of welding is between 20-50cm/min; Be that face bonding is two-layer for thickness in the welding number of plies of the steel plate being greater than 36mm, reverse side weldering is two-layer, welding current between 800-950A, weldingvoltage between 38-42V, speed of welding is between 20-28cm/min;
(4) mouth of pipe polishing, organize right:
(5) inner and outer ring seam welding: group is firmly placed on turntable good steel pipe, its one end presses closer backstay, connects ground wire and adjusts the position of welding agent pallet, adjusting welding machine and carry out welding: wherein: interior boxing adopts delayed welding procedure; Both welding wire centre-to-centre spacing pipe diameter minimum point was 30-50mm, and Weld pipe mill is aimed at welding wire center, its deviation≤1mm, and welding wire end is apart from tube wall 50-80mm; Outer welding adopts advanced welding procedure, and both welding wire centre-to-centre spacing pipe diameter minimum point was 30-50mm, and Weld pipe mill is aimed at welding wire center, its deviation≤1mm, and welding wire end is apart from tube wall 50-80mm;
During welding, be face bonding one deck for thickness in the welding number of plies of the steel plate of 8-34mm, reverse side welds one deck, welding current between 450-980A, weldingvoltage between 30-45V, speed of welding is between 20-50cm/min; Welding number of plies thickness being greater than to the steel plate of 36mm is that face bonding is two-layer, and reverse side weldering is two-layer, welding current between 800-950A, weldingvoltage between 38-42V, speed of welding is between 20-28cm/min;
(6) weld appearance, Non-Destructive Testing and repairing.
2. vertical masonry joint steel pipe crimping processing technology according to claim 1, is characterized in that: in above-mentioned steps (2), the arc length of the school round template of pipe crimping should be 1/6 ~ 1/4 of pipe girth; The gap of not fitting of model and inside pipe wall should meet the following requirements:
10% of a, docking longitudinal seam place≤wall thickness adds 2mm, and≤3mm;
B, docking longitudinal joint place≤2mm from pipe end 200mm;
C, other position≤1mm;
Cylindrical shell interface should meet the following requirements:
A, interface gaps≤4mm;
10% of b, edges of boards height infraversion malposition≤thickness of slab, and≤2mm;
C, end plates dislocation≤1mm.
3. vertical masonry joint steel pipe crimping processing technology according to claim 1, is characterized in that: in above-mentioned steps (3), welding wire adopts H08A, solder flux HJ431; Groove type: 16 and 16mm adopt " I " type groove with lower steel plate, 18 ~ 24 steel plates adopt " Y " type grooves, and 26 ~ 42 steel plates adopt " X " type grooves; Steel plate thickness≤12 Ф 4mm welding wire, steel plate thickness >=14mm Ф 5mm welding wire.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410219813.XA CN105081683B (en) | 2014-05-23 | 2014-05-23 | Vertical masonry joint steel pipe crimping processing technology |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410219813.XA CN105081683B (en) | 2014-05-23 | 2014-05-23 | Vertical masonry joint steel pipe crimping processing technology |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105081683A true CN105081683A (en) | 2015-11-25 |
| CN105081683B CN105081683B (en) | 2017-12-08 |
Family
ID=54563491
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410219813.XA Active CN105081683B (en) | 2014-05-23 | 2014-05-23 | Vertical masonry joint steel pipe crimping processing technology |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105081683B (en) |
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105345235A (en) * | 2015-11-26 | 2016-02-24 | 中国水电四局（祥云）机械能源装备有限公司 | Cylindrical no-root full-penetration union melt welding method |
| CN105345221A (en) * | 2015-11-30 | 2016-02-24 | 浙江瑞能通信科技股份有限公司 | Processing method for iron tower barrel |
| CN105643048A (en) * | 2016-03-31 | 2016-06-08 | 合肥紫金钢管有限公司 | Manufacturing technology for long large-diameter LSAW (longitudinal submerged arc welding) pile pipe for ocean platform |
| CN105855320A (en) * | 2016-06-03 | 2016-08-17 | 合肥紫金钢管股份有限公司 | Preparation method of anticorrosion coiled steel pipe for marine environment |
| CN106041420A (en) * | 2016-06-20 | 2016-10-26 | 中国化学工程第三建设有限公司 | Barrel rolling technology |
| CN106271432A (en) * | 2016-08-30 | 2017-01-04 | 天津鑫凯建业科技有限公司 | A kind of steel pipes with straight manufacturing process and the reel hold down gag for this technique |
| CN106984945A (en) * | 2017-03-22 | 2017-07-28 | 河南中拓石油工程技术股份有限公司 | A kind of small-bore pipeline no-dig technique stainless steel tube inner lining process |
| CN108802178A (en) * | 2018-04-18 | 2018-11-13 | 中国铁道科学研究院金属及化学研究所 | Steel rail weld joint quality detection apparatus and quality determining method |
| CN109158740A (en) * | 2018-10-12 | 2019-01-08 | 中冶辽宁德龙钢管有限公司 | A kind of spiral welded pipe adapting method |
| CN110434497A (en) * | 2019-07-16 | 2019-11-12 | 中车西安车辆有限公司 | A kind of welding method of cylinder one side welding with back formation |
| CN112276311A (en) * | 2020-09-03 | 2021-01-29 | 海洋石油工程（青岛）有限公司 | Assembly welding process for ultra-large-diameter steel piles |
| CN112518243A (en) * | 2020-11-23 | 2021-03-19 | 江苏海力海上风电装备制造有限公司 | Novel manufacturing process of long and narrow thick plate transition section of wind power tower |
| WO2023216433A1 (en) * | 2022-05-09 | 2023-11-16 | 河南董氏管道有限公司 | Ultra-thin wall large-diameter stainless steel welded pipe and manufacturing method therefor |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101069908A (en) * | 2007-06-16 | 2007-11-14 | 王行山 | Process for board-rolling machine to make roll |
| CN101564739A (en) * | 2009-05-31 | 2009-10-28 | 武汉冶建安装工程有限责任公司 | Pipe rolling technique for pressure head material-free steel pipe |
| CN102078888A (en) * | 2010-12-27 | 2011-06-01 | 中国二十二冶集团有限公司 | Method for manufacturing steel pipe with long round section |
| JP2012096267A (en) * | 2010-11-02 | 2012-05-24 | Toyota Motor Corp | Device and method for manufacturing metal tube |
-
2014
- 2014-05-23 CN CN201410219813.XA patent/CN105081683B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101069908A (en) * | 2007-06-16 | 2007-11-14 | 王行山 | Process for board-rolling machine to make roll |
| CN101564739A (en) * | 2009-05-31 | 2009-10-28 | 武汉冶建安装工程有限责任公司 | Pipe rolling technique for pressure head material-free steel pipe |
| JP2012096267A (en) * | 2010-11-02 | 2012-05-24 | Toyota Motor Corp | Device and method for manufacturing metal tube |
| CN102078888A (en) * | 2010-12-27 | 2011-06-01 | 中国二十二冶集团有限公司 | Method for manufacturing steel pipe with long round section |
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105345235A (en) * | 2015-11-26 | 2016-02-24 | 中国水电四局（祥云）机械能源装备有限公司 | Cylindrical no-root full-penetration union melt welding method |
| CN105345221B (en) * | 2015-11-30 | 2017-12-05 | 浙江瑞能通信科技股份有限公司 | The processing method of steel tower cylinder |
| CN105345221A (en) * | 2015-11-30 | 2016-02-24 | 浙江瑞能通信科技股份有限公司 | Processing method for iron tower barrel |
| CN105643048A (en) * | 2016-03-31 | 2016-06-08 | 合肥紫金钢管有限公司 | Manufacturing technology for long large-diameter LSAW (longitudinal submerged arc welding) pile pipe for ocean platform |
| CN105855320A (en) * | 2016-06-03 | 2016-08-17 | 合肥紫金钢管股份有限公司 | Preparation method of anticorrosion coiled steel pipe for marine environment |
| CN106041420A (en) * | 2016-06-20 | 2016-10-26 | 中国化学工程第三建设有限公司 | Barrel rolling technology |
| CN106271432A (en) * | 2016-08-30 | 2017-01-04 | 天津鑫凯建业科技有限公司 | A kind of steel pipes with straight manufacturing process and the reel hold down gag for this technique |
| CN106984945A (en) * | 2017-03-22 | 2017-07-28 | 河南中拓石油工程技术股份有限公司 | A kind of small-bore pipeline no-dig technique stainless steel tube inner lining process |
| CN108802178A (en) * | 2018-04-18 | 2018-11-13 | 中国铁道科学研究院金属及化学研究所 | Steel rail weld joint quality detection apparatus and quality determining method |
| CN108802178B (en) * | 2018-04-18 | 2024-04-05 | 中国铁道科学研究院金属及化学研究所 | Quality detection equipment and quality detection method for steel rail welded joint |
| CN109158740A (en) * | 2018-10-12 | 2019-01-08 | 中冶辽宁德龙钢管有限公司 | A kind of spiral welded pipe adapting method |
| CN110434497A (en) * | 2019-07-16 | 2019-11-12 | 中车西安车辆有限公司 | A kind of welding method of cylinder one side welding with back formation |
| CN112276311A (en) * | 2020-09-03 | 2021-01-29 | 海洋石油工程（青岛）有限公司 | Assembly welding process for ultra-large-diameter steel piles |
| CN112518243A (en) * | 2020-11-23 | 2021-03-19 | 江苏海力海上风电装备制造有限公司 | Novel manufacturing process of long and narrow thick plate transition section of wind power tower |
| WO2023216433A1 (en) * | 2022-05-09 | 2023-11-16 | 河南董氏管道有限公司 | Ultra-thin wall large-diameter stainless steel welded pipe and manufacturing method therefor |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105081683B (en) | 2017-12-08 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105081683B (en) | Vertical masonry joint steel pipe crimping processing technology | |
| CN102896472B (en) | The preparation method of box type pillar beam | |
| CN101797600B (en) | Method for manufacturing high-strength X100 steel grade spiral seam submerged arc welded pipe | |
| CN103084703B (en) | A kind of large-scale interior empty steel-casting mends built-up welding reproducing method by replacing a damaged part | |
| CN100515658C (en) | Large straight-line joint submerged arc welding tube fast production process | |
| CN101886222B (en) | Method for manufacturing high-strength X90 steel grade spiral submerged arc welded pipe | |
| CN102284550B (en) | Spiral seam submerged arc welded pipe manufacturing process | |
| CN107263031A (en) | Cylinder is without pre-bending edge rolling moulding process | |
| CN104128694A (en) | Longitudinal seam red copper liner welding process of steel sheet pressure vessel and red copper liner used by same | |
| CN102330034A (en) | X65MS steel-grade spiral welded tube for acidic corrosion environment and manufacturing method thereof | |
| CN107825083A (en) | A kind of wedge bracket structure construction technology | |
| CN113084459B (en) | Continuous intelligent forming process for stainless steel straight welded pipe | |
| CN106975675A (en) | The wind-powered electricity generation steel-pipe pile shell rolling technique of system and the application system is monitored and controlled in a kind of light sensation of veneer reeling machine | |
| CN102350574B (en) | Argon arc welding double-gun butt-welding method | |
| CN102330032A (en) | Acid-proof X70MS steel-grade spiral welded pipe and manufacturing method thereof | |
| CN112548382A (en) | Defect welding repair process for arc surface welding seam | |
| CN103481032A (en) | Process for forming welding of large thick-wall sulphur-resisting tower barrel | |
| CN110682051A (en) | Novel process for rolling and assembling large-taper thick plate | |
| CN104668747A (en) | Method for welding tanks of railway tank vehicles | |
| CN105364430A (en) | Laser welding method capable of realizing synchronous rolling of edge joints of sheets | |
| CN110860768B (en) | Welding process for large beam rail bearing beam and square steel rail of track crane | |
| CN103722298B (en) | A kind of panel double-side Butt Joint root gap with bonding control method | |
| CN113021005A (en) | Continuous intelligent forming device for large-caliber stainless steel straight welded pipe | |
| CN101898271B (en) | Solid shaft assembling and welding method | |
| CN102642121A (en) | Cast steel stator pressing ring repair welding process |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |